.menu-box {
    width: 200px;
    height: 100%;
    border-right: 1px solid #ccc;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.menu-box a {
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid #ccc;
}

.menu-box .active {
    color: red;
    background: skyblue;
}